Can you get fingerprints after it rains? Fingerprints consist of different endogenous secretions e.g. amino acids, sebaceous, salts, urea and fatty acids. Those which contain more oily secretions that are hydrophobic, are still preserved after getting wet. Latent, non-visible, fingerprints can be detected and analysed by using different chemicals. How long do fingerprints last in […]
Do all fireplaces have flues?
Do all fireplaces have flues? Every Fireplace has a chimney damper. This is a movable plate that sits above the fireplace before the flue. Generaly the flue begins were the fireplace transforms into the flue pipe and ends at the chimney cap. The purpose of the flue is to move ash, sparks, smoke and gas […]
Is yogurt a nutrient-dense food?
Is yogurt a nutrient-dense food? Like most dairy products, yogurt provides many important nutrients, including protein, calcium, potassium and other important nutrients. Many yogurts are low-fat or fat-free and contain little or no saturated fat and cholesterol. Yogurt is a nutrient-dense, convenient and delicious food for snacks and meals. Can I substitute mayonnaise for milk? […]
Why is juice a solution?
Why is juice a solution? Why? Because the sugar is completely dissolved in the liquid. Mixed together, lemon juice, water, and sugar form a solution. A solution is a mixture in which the different kinds of matter are spread out evenly. Is grape juice a pure substance or mixture? entirely of one type of atom […]
Why do grasshoppers have compound eyes?
Why do grasshoppers have compound eyes? The grasshopper has three simple eyes located between its compound eyes. Simple eyes have only one facet. They can see the difference between light and dark only. Compound eyes are a way of seeing more efficiently at the high velocities that some insects travel at. Do all insects have […]
How hot does a Jeep Exhaust get?
How hot does a Jeep Exhaust get? The exhaust pipe muffler temperature is usually between 300 to 500 degrees, but they are also known to handle higher temperatures of up to 1200 degrees. Extreme exhaust temperatures can destroy the catalytic converter. How does the exhaust system work? How much does a custom exhaust manifold cost? […]
Who designed the Bahamas coat of arms?
What is subway in road construction?
What is subway in road construction? Subway, also called underground, tube, or métro, underground railway system used to transport large numbers of passengers within urban and suburban areas. Subways are usually built under city streets for ease of construction, but they may take shortcuts and sometimes must pass under rivers. What is the difference between […]
What national park contains a great concentration of African wildlife?
What national park contains a great concentration of African wildlife? Serengeti National Park What is Serengeti National Park famous for? The park is famous for the annual migration of millions of wildebeests plus hundreds of thousands of gazelles and zebras, followed by their predators, providing one of the most impressive nature spectacles in the world. […]
How does cooking improve the safety of foods?
How does cooking improve the safety of foods? Heating foods to this temperature kills most food-poisoning bacteria. Use a thermometer to check the internal temperature of foods during the cooking process. Cook mince, sausages, whole chickens or stuffed meats right through to the centre. What is the first thing you do when cooking? First, you […]